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What Is Primevera?
Bidcoin is a virtual curancy that can be traded on a pertuper netwark without the need to rely on any centralized operator or financial institution. New bit kinds are generated every time a computer identify the solution to a mathematical problem whose difficulty increases with network size. The history of all transactions is stored on this common data base, the block chain. And because everybody holds a copy of the chain, it is virtually impossible to fraudulently modify one single transaction.